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-<H1>curs_inopts 3x</H1>
-<HR>
+<H1 class="no-header">curs_inopts 3x</H1>
<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
<STRONG><A HREF="curs_inopts.3x.html">curs_inopts(3x)</A></STRONG> <STRONG><A HREF="curs_inopts.3x.html">curs_inopts(3x)</A></STRONG>
</PRE>
+<H2>
<a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>cbreak</STRONG>, <STRONG>nocbreak</STRONG>, <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>,
<STRONG>keypad</STRONG>, <STRONG>meta</STRONG>, <STRONG>nodelay</STRONG>, <STRONG>notimeout</STRONG>, <STRONG>raw</STRONG>, <STRONG>noraw</STRONG>, <STRONG>noqiflush</STRONG>,
<STRONG>qiflush</STRONG>, <STRONG>timeout</STRONG>, <STRONG>wtimeout</STRONG>, <STRONG>typeahead</STRONG> - <STRONG>curses</STRONG> input
</PRE>
+<H2>
<a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>cbreak(void);</STRONG>
</PRE>
-<H2>DESCRIPTION</H2><PRE>
+<H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+ The <STRONG>ncurses</STRONG> library provides several functions which let
+ an application change way input from the terminal is han-
+ dled. Some are global, applying to all windows. Others
+ apply only to a specific window. Window-specific settings
+ are not automatically applied to new or derived windows.
+ An application must apply these to each window, if the
+ same behavior is needed.
+
+
+</PRE>
+<H3><a name="h3-cbreak">cbreak</a></H3><PRE>
Normally, the tty driver buffers typed characters until a
newline or carriage return is typed. The <STRONG>cbreak</STRONG> routine
disables line buffering and erase/kill character-process-
rides <STRONG>raw</STRONG>. [See <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG> for a discussion of how
these routines interact with <STRONG>echo</STRONG> and <STRONG>noecho</STRONG>.]
+
+</PRE>
+<H3><a name="h3-echo_noecho">echo/noecho</a></H3><PRE>
The <STRONG>echo</STRONG> and <STRONG>noecho</STRONG> routines control whether characters
typed by the user are echoed by <STRONG>getch</STRONG> as they are typed.
Echoing by the tty driver is always disabled, but initial-
[See <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG> for a discussion of how these routines
interact with <STRONG>cbreak</STRONG> and <STRONG>nocbreak</STRONG>.]
+
+</PRE>
+<H3><a name="h3-halfdelay">halfdelay</a></H3><PRE>
The <STRONG>halfdelay</STRONG> routine is used for half-delay mode, which
is similar to <STRONG>cbreak</STRONG> mode in that characters typed by the
user are immediately available to the program. However,
must be a number between 1 and 255. Use <STRONG>nocbreak</STRONG> to leave
half-delay mode.
+
+</PRE>
+<H3><a name="h3-intrflush">intrflush</a></H3><PRE>
If the <STRONG>intrflush</STRONG> option is enabled, (<EM>bf</EM> is <STRONG>TRUE</STRONG>), when an
interrupt key is pressed on the keyboard (interrupt,
break, quit) all output in the tty driver queue will be
ited from the tty driver settings. The window argument is
ignored.
+
+</PRE>
+<H3><a name="h3-keypad">keypad</a></H3><PRE>
The <STRONG>keypad</STRONG> option enables the keypad of the user's termi-
nal. If enabled (<EM>bf</EM> is <STRONG>TRUE</STRONG>), the user can press a func-
tion key (such as an arrow key) and <STRONG>wgetch</STRONG> returns a sin-
turned on (made to transmit) and off (made to work local-
ly), turning on this option causes the terminal keypad to
be turned on when <STRONG>wgetch</STRONG> is called. The default value for
- keypad is false.
+ keypad is <STRONG>FALSE</STRONG>.
+
+</PRE>
+<H3><a name="h3-meta">meta</a></H3><PRE>
Initially, whether the terminal returns 7 or 8 significant
bits on input depends on the control mode of the tty driv-
- er [see <STRONG><A HREF="termio.7.html">termio(7)</A></STRONG>]. To force 8 bits to be returned, in-
+ er [see <STRONG>termio(7)</STRONG>]. To force 8 bits to be returned, in-
voke <STRONG>meta</STRONG>(<EM>win</EM>, <STRONG>TRUE</STRONG>); this is equivalent, under POSIX, to
setting the CS8 flag on the terminal. To force 7 bits to
be returned, invoke <STRONG>meta</STRONG>(<EM>win</EM>, <STRONG>FALSE</STRONG>); this is equivalent,
<STRONG>meta</STRONG>(<EM>win</EM>, <STRONG>TRUE</STRONG>) is called and <STRONG>rmm</STRONG> is sent when <STRONG>meta</STRONG>(<EM>win</EM>,
<STRONG>FALSE</STRONG>) is called.
+
+</PRE>
+<H3><a name="h3-nodelay">nodelay</a></H3><PRE>
The <STRONG>nodelay</STRONG> option causes <STRONG>getch</STRONG> to be a non-blocking call.
If no input is ready, <STRONG>getch</STRONG> returns <STRONG>ERR</STRONG>. If disabled (<EM>bf</EM>
is <STRONG>FALSE</STRONG>), <STRONG>getch</STRONG> waits until a key is pressed.
tween sequences received from a function key and those
typed by a user.
+
+</PRE>
+<H3><a name="h3-raw_noraw">raw/noraw</a></H3><PRE>
The <STRONG>raw</STRONG> and <STRONG>noraw</STRONG> routines place the terminal into or out
of raw mode. Raw mode is similar to <STRONG>cbreak</STRONG> mode, in that
characters typed are immediately passed through to the us-
signal. The behavior of the BREAK key depends on other
bits in the tty driver that are not set by <STRONG>curses</STRONG>.
+
+</PRE>
+<H3><a name="h3-noqiflush">noqiflush</a></H3><PRE>
When the <STRONG>noqiflush</STRONG> routine is used, normal flush of input
and output queues associated with the <STRONG>INTR</STRONG>, <STRONG>QUIT</STRONG> and <STRONG>SUSP</STRONG>
- characters will not be done [see <STRONG><A HREF="termio.7.html">termio(7)</A></STRONG>]. When <STRONG>qiflush</STRONG>
+ characters will not be done [see <STRONG>termio(7)</STRONG>]. When <STRONG>qiflush</STRONG>
is called, the queues will be flushed when these control
characters are read. You may want to call <STRONG>noqiflush()</STRONG> in
a signal handler if you want output to continue as though
the interrupt had not occurred, after the handler exits.
+
+</PRE>
+<H3><a name="h3-timeout_wtimeout">timeout/wtimeout</a></H3><PRE>
The <STRONG>timeout</STRONG> and <STRONG>wtimeout</STRONG> routines set blocking or non-
blocking read for a given window. If <EM>delay</EM> is negative,
blocking read is used (i.e., waits indefinitely for in-
additional capability of being able to block for only <EM>de-</EM>
<EM>lay</EM> milliseconds (where <EM>delay</EM> is positive).
- The <STRONG>curses</STRONG> library does ``line-breakout optimization'' by
+
+</PRE>
+<H3><a name="h3-typeahead">typeahead</a></H3><PRE>
+ The <STRONG>curses</STRONG> library does "line-breakout optimization" by
looking for typeahead periodically while updating the
screen. If input is found, and it is coming from a tty,
the current update is postponed until <STRONG>refresh</STRONG> or <STRONG>doupdate</STRONG>
</PRE>
-<H2>
RETURN VALUE</H2><PRE>
+<H2>
<a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
All routines that return an integer return <STRONG>ERR</STRONG> upon fail-
ure and OK (SVr4 specifies only "an integer value other
than <STRONG>ERR</STRONG>") upon successful completion, unless otherwise
</PRE>
-<H2>
PORTABILITY</H2><PRE>
+<H2>
<a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
These functions are described in the XSI Curses standard,
Issue 4.
ty, set echo or noecho explicitly just after initializa-
tion, even if your program remains in cooked mode.
+ When <STRONG>keypad</STRONG> is first enabled, ncurses loads the key-defi-
+ nitions for the current terminal description. If the ter-
+ minal description includes extended string capabilities,
+ e.g., from using the <STRONG>-x</STRONG> option of tic, then ncurses also
+ defines keys for the capabilities whose names begin with
+ "k". The corresponding keycodes are generated and (de-
+ pending on previous loads of terminal descriptions) may
+ differ from one execution of a program to the next. The
+ generated keycodes are recognized by the <STRONG>keyname</STRONG> function
+ (which will then return a name beginning with "k" denoting
+ the terminfo capability name rather than "K", used for
+ curses key-names). On the other hand, an application can
+ use <STRONG>define_key</STRONG> to establish a specific keycode for a given
+ string. This makes it possible for an application to
+ check for an extended capability's presence with <EM>tigetstr</EM>,
+ and reassign the keycode to match its own needs.
+
+ Low-level applications can use <STRONG>tigetstr</STRONG> to obtain the def-
+ inition of any particular string capability. Higher-level
+ applications which use the curses <STRONG>wgetch</STRONG> and similar func-
+ tions to return keycodes rely upon the order in which the
+ strings are loaded. If more than one key definition has
+ the same string value, then <STRONG>wgetch</STRONG> can return only one
+ keycode. Most curses implementations (including ncurses)
+ load key definitions in the order defined by the array of
+ string capability names. The last key to be loaded deter-
+ mines the keycode which will be returned. In ncurses, you
+ may also have extended capabilities interpreted as key
+ definitions. These are loaded after the predefined keys,
+ and if a capability's value is the same as a previously-
+ loaded key definition, the later definition is the one
+ used.
+
</PRE>
- Note that <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>, <STRONG>meta</STRONG>, <STRONG>node-</STRONG>
- <STRONG>lay</STRONG>, <STRONG>notimeout</STRONG>, <STRONG>noqiflush</STRONG>, <STRONG>qiflush</STRONG>, <STRONG>timeout</STRONG>, and <STRONG>wtimeout</STRONG>
+<H2>
<a name="h2-NOTES">NOTES</a></H2><PRE>
+ Note that <STRONG>echo</STRONG>, <STRONG>noecho</STRONG>, <STRONG>halfdelay</STRONG>, <STRONG>intrflush</STRONG>, <STRONG>meta</STRONG>, <STRONG>node-</STRONG>
+ <STRONG>lay</STRONG>, <STRONG>notimeout</STRONG>, <STRONG>noqiflush</STRONG>, <STRONG>qiflush</STRONG>, <STRONG>timeout</STRONG>, and <STRONG>wtimeout</STRONG>
may be macros.
The <STRONG>noraw</STRONG> and <STRONG>nocbreak</STRONG> calls follow historical practice in
- that they attempt to restore to normal (`cooked') mode
- from raw and cbreak modes respectively. Mixing raw/noraw
- and cbreak/nocbreak calls leads to tty driver control
- states that are hard to predict or understand; it is not
+ that they attempt to restore to normal (`cooked') mode
+ from raw and cbreak modes respectively. Mixing raw/noraw
+ and cbreak/nocbreak calls leads to tty driver control
+ states that are hard to predict or understand; it is not
recommended.
</PRE>
-<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG><A HREF="termio.7.html">termio(7)</A></STRONG>
+<H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>,
+ <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>, <STRONG><A HREF="define_key.3x.html">define_key(3x)</A></STRONG>, <STRONG>termio(7)</STRONG>
<STRONG><A HREF="curs_inopts.3x.html">curs_inopts(3x)</A></STRONG>
</PRE>
-<HR>
-<ADDRESS>
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+<div class="nav">
+<ul>
+<li><a href="#h2-NAME">NAME</a></li>
+<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
+<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
+<ul>
+<li><a href="#h3-cbreak">cbreak</a></li>
+<li><a href="#h3-echo_noecho">echo/noecho</a></li>
+<li><a href="#h3-halfdelay">halfdelay</a></li>
+<li><a href="#h3-intrflush">intrflush</a></li>
+<li><a href="#h3-keypad">keypad</a></li>
+<li><a href="#h3-meta">meta</a></li>
+<li><a href="#h3-nodelay">nodelay</a></li>
+<li><a href="#h3-raw_noraw">raw/noraw</a></li>
+<li><a href="#h3-noqiflush">noqiflush</a></li>
+<li><a href="#h3-timeout_wtimeout">timeout/wtimeout</a></li>
+<li><a href="#h3-typeahead">typeahead</a></li>
+</ul>
+</li>
+<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
+<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
+<li><a href="#h2-NOTES">NOTES</a></li>
+<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
+</ul>
+</div>
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